marionnet doesn't run as non-root user

[Andy Linton]

If I try to run as a regular user I get the following output. Running as 'root' finds global_options.ml and the system starts with a warning about running as UID=0 as it should!

MARIONNET_DEBUG=true marionnet
=======================================================
 Welcome to marionnet
 Version : 0.90.6
 Source revision : 318 - 2011-02-02 19:27:57 +0100
 Ocamlbricks revision : 229 - 2010-11-23 10:55:39 +0100

 Built in date 2013-06-24 19:58:17 +1200 on system:

        Linux 3.2.0-48-generic #74-Ubuntu SMP
        Thu Jun 6 19:43:26 UTC 2013 x86_64
        GNU/Linux

 For bug reporting, please get a launchpad account and
 either:
  - report bugs at https://bugs.launchpad.net/marionnet
 or do *all* the following:
  - add yourself to the marionnet-dev team
  - add yourself to the marionnet-dev mailing list
  - write to <email address hidden>
=======================================================
[0]: MARIONNET_DEBUG is true (debug level 1)
[0]: Searching for variable MARIONNET_TERMINAL:
[0]: Warning: MARIONNET_TERMINAL not declared.
[0]: - using default "xterm,-T,-e"
[0]: Searching for variable MARIONNET_ROUTER_FILESYSTEM:
[0]: Warning: MARIONNET_ROUTER_FILESYSTEM not declared.
[0]: - using default "default"
[0]: Searching for variable MARIONNET_ROUTER_KERNEL:
[0]: Warning: MARIONNET_ROUTER_KERNEL not declared.
[0]: - using default "default"
[0]: Searching for variable MARIONNET_MACHINE_FILESYSTEM:
[0]: Warning: MARIONNET_MACHINE_FILESYSTEM not declared.
[0]: - using default "default"
[0]: Searching for variable MARIONNET_MACHINE_KERNEL:
[0]: Warning: MARIONNET_MACHINE_KERNEL not declared.
[0]: - using default "default"
[0]: Searching for variable MARIONNET_PREFIX:
[0]: Warning: MARIONNET_PREFIX not declared.
[0]: - using default "/usr/local/share/marionnet"
[0]: Searching for variable MARIONNET_FILESYSTEMS_PATH:
[0]: Warning: MARIONNET_FILESYSTEMS_PATH not declared.
[0]: - using default "/usr/local/share/marionnet//filesystems/"
[0]: Searching for variable MARIONNET_KERNELS_PATH:
[0]: Warning: MARIONNET_KERNELS_PATH not declared.
[0]: - using default "/usr/local/share/marionnet//kernels/"
[0]: Searching for variable MARIONNET_VDE_PREFIX:
[0]: Warning: MARIONNET_VDE_PREFIX not declared.
[0]: - using default ""
[0]: Searching for variable MARIONNET_ROUTER_PORT0_DEFAULT_IPV4_CONFIG:
[0]: Warning: MARIONNET_ROUTER_PORT0_DEFAULT_IPV4_CONFIG not declared.
[0]: - using default "192.168.1.254/24"
[0]: Loading module global_options.ml
Fatal error: exception Not_found

[Andy Linton (asjl)]

I dug some more into this. Seems that the marionnet_from_scratch script was getting confused by the fact that I had umask set to 027

http://blogs.gentoo.org/mgorny/2011/10/18/027-umask-a-compromise-between-security-and-simplicity/

I reset the umask, reinstalled and it's now working.

[Jean-Vincent Loddo (loddo)]

Indeed, with such umask the file `marionnet.conf' is installed (by root,
via the script marionnet_from_scratch) in /etc/marionnet/ without the
"read" permission for a normal user. Then marionnet, launched as normal
user, raises an exception.

It's a (pernicious) bug of marionnet_from_scratch, because the user has
the right to decide the umask he wants. I will fix it by calling the
bash builtin:

umask 0022

in the starting section of the script.
Thanks for the report.
Jean-Vincent

Le 25/06/2013 02:52, Andy Linton a écrit :
> I dug some more into this. Seems that the marionnet_from_scratch script
> was getting confused by the fact that I had umask set to 027
>
> http://blogs.gentoo.org/mgorny/2011/10/18/027-umask-a-compromise-
> between-security-and-simplicity/
>
> I reset the umask, reinstalled and it's now working.
>